苯乙烯-丙烯酸丁酯/蒙脱土复合乳液制备及涂层耐蚀性研究  

Preparation and corrosion resistance properties of styrene-acrylic emulsion/montmorillonite nanocomposites

作　　者：葛金龙[1] 詹新举[1] 高洪成[1] 郭彪华[1] 

机构地区：[1]蚌埠学院应用化学与环境工程系,蚌埠233000

出　　处：《化工新型材料》2013年第7期48-50,共3页New Chemical Materials

基　　金：蚌埠学院工程研究中心项目(BBXYGC2011B02);安徽省教育厅自然科学基金项目(KJ2011B091)

摘　　要：通过半连续乳液聚合法以苯乙烯,丙烯酸丁酯和蒙脱土为主要原料合成了苯丙乳液/蒙脱土纳米复合材料。透射电镜表征了粒子的形貌,表明乳液胶粒呈球形,粒径分布范围约为110nm;XRD表征改性乳液的结构,表明苯丙乳液插层到蒙脱土层间形成插层与部分剥离型纳米复合材料;TG、DTG表征复合材料的热稳定性,表明与苯丙乳液相比,纳米复合材料的热稳定性提高了22℃,2%质量分数蒙脱土改性乳胶膜最大分解速率温度提高了16℃;Tafel极化曲线表征改性前后涂层在钢材基板上的耐腐蚀性,不同质量分数的复合乳液的腐蚀电位均有不同程度的正移,2%蒙脱土质量分数改性的乳液耐蚀性最好。Styrene-acrylic emulsion/montmorillonite nanocomposites were prepared by the method of semi-continu ous emulsion polymerization with the raw materials of styrene, butyl acrylate and Na-MMT. The particle size distribution range was about100nm by TEM. XRD showed that the polymer was inserted into the clay layers to format intercalated and exfoliated nanocomposites. The TG and DTG showed that thermal stability of the intercalated nanocomposites was relatived to the pure styrene-acrylic emulsion due to the incorporated Na-MMT. Tafel polarization characterization of the corrosion resistance of coatings on the steel plate was carried out, the result showed that the composite can increase corrosion resist- ance where 2% Na-MMT had the best corrosion resistance.

关 键 词：苯丙乳液 蒙脱土 改性 耐腐蚀性能 热稳定性 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]